Argentina

Two men stand in front of Buenos Aires' Obelisk during an HIV/AIDS awareness rally on World AIDS Day, December 1, 2011. The banner that hungs on the Obelisk reads, "No more kids with HIV".

Two men stand in front of Buenos Aires' Obelisk during an HIV/AIDS awareness rally on World AIDS Day, December 1, 2011. The banner that hungs on the Obelisk reads, "No more kids with HIV". (REUTERS/Marcos Brindicci)

Two men stand in front of Buenos Aires' Obelisk during an HIV/AIDS awareness rally on World AIDS Day, December 1, 2011. The banner that hungs on the Obelisk reads, "No more kids with HIV".